Mechanical sweeper

Abstract

Mechanical sweeper with slotlike bearing bores with introduction slits in partition walls and outwardly open wheel recesses in the housing wherein the drive/running wheels are closed externally with a smooth surface and are retained by check plates and retaining pockets on the partition walls.

We claim: 
     
       1. A mechanical sweeper of the type including a housing having two oppositely located lateral walls, brush means connected to the housing, a dirt-collecting receptacle positioned in the housing and means for moving the housing over a surface to be cleaned, comprising: means for supporting the housing on the surface to be cleaned including an assembly having at least one axle with end portions and a wheel mounted on each of said end portions, said wheel having an inner surface including a radially extending projection, the lateral walls each including a slot for removably introducing a respective one of said end portion of said axle into said slot; and   oppositely located protrusions, each of said protrusions extending outwardly from a respective one of the lateral walls and being parallel to and spaced from said respective one of the lateral walls, said wheel projection being positioned and confined between a respective one of the lateral walls and protrusions after introduction of said axle into said slot.   
     
     
       2. The sweeper as claimed in claim 1 wherein said wheel has a substantially flat outer surface. 
     
     
       3. The sweeper as claimed in claim 2 wherein said housing further includes outer walls each extending laterally outwardly from a respective one of the lateral walls and each being substantially parallel to the respective one of the lateral wall and spaced outwardly from said projections, and wherein said housing is recessed in each of said outer walls thereof for accommodating a respective wheel. 
     
     
       4. The sweeper as claimed in claim 1 wherein each of said slots includes a section in which said axle is retained when mounted on said housing, and wherein said section communicates with said open end. 
     
     
       5. The sweeper as claimed in claim 4 wherein said slot is L-shaped, said open end forming one, and said section forming the other, leg thereof.